As someone who used to work on Excel, awesome work and congrats on the launch! I get that it's easy to bash on VBA, but I'd argue it's what made Excel what it is today (though maybe not the language/runtime per se, but rather the ergonomics).

I feel pretty confident saying that probably 5% of the world's economy runs on VBA macros that were started by some eager worker that was tired of doing repetitive tasks and wondered what that "Record Macro" button did. I've heard that same story personally from so many users, about how they learned to code by hitting "Record Macro", doing something and looking at the resulting code. Their macro then grows and grows and ends up powering the entire business, but becomes an unmaintainable mess.

If you add the ability to record macros and maybe a VBA -> Python cross compiler, that would probably be killer for a lot of people. Though honestly, I've seen some stuff in VBA that's probably best left alone (e.g.: a self-rewriting VBA macro).

That being said, I'm sure your biggest hurdles are going to be cultural rather than technical. Excel is just so ingrained in so many business. But I genuinely wish you best of luck and am rooting for y'all!